Demographic history

spread of the human species from Africa through the world

list of human losses by participating country

counts of dead and wounded in WWI

human demography in Europe and the Mediterranean during the Middle Ages

overview about World War II casualties of the Soviet Union

Wikimedia list article

study of human demography in prehistory

The Ostflucht (; "flight from the East") was the migration of Germans, in the later 19th century and early 20th century, from areas which were then eastern parts of Germany to more industrialized regions in central and western Germany. The migrants originated in East Prussia, West Prussia, Silesia, Pomerania and Posen; they moved to provinces along the Rhine and Ruhr rivers. Most of the migrants were ethnic Germans, but many migrants to the Ruhr were of Polish ethnicity, later known as Ruhrpolen.

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estimate of world population

study of the human population in Antiquity

movement by people from one place to another over the course of history